Old home renovation costs commonly run $75,000-$300,000 for a 1,500-square-foot house, with a national planning average near $165,000. The final price depends on the house’s condition, location, finish level, and whether plumbing, wiring, structural framing, or hazardous materials need work.
For a broad budget, expect roughly $50-$200 per square foot, with extensive restorations sometimes exceeding $250 per square foot.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Whole-house renovation | $75,000 | $165,000 | $300,000+ | About 1,500 sq ft; excludes major additions |
| Cost per square foot | $50 | $110 | $200+ | Finish and repair scope drive the range |
| Kitchen renovation | $18,000 | $38,000 | $75,000 | Cabinet, appliance, and layout choices |
| Bathroom renovation | $8,000 | $18,000 | $35,000 | Per standard bathroom |
| Electrical rewiring | $8,000 | $16,000 | $30,000 | Whole-house work; access affects labor |
What a 1,500-square-foot old house renovation costs
A light renovation of a basically sound home may cost $50-$90 per square foot, or about $75,000-$135,000 for 1,500 square feet. This can cover surface repairs, paint, flooring, fixture updates, and selected kitchen or bathroom improvements without major layout changes.
A midrange project with new cabinets, several bathroom updates, partial electrical or plumbing work, and repairs to walls or floors often reaches $90-$160 per square foot. A home needing extensive system replacement, structural repairs, custom finishes, or historic detailing can exceed $160-$250 per square foot.
For a typical 1,500-square-foot home, $110 per square foot is a useful early planning figure, not a contractor quote. It assumes standard-grade finishes, ordinary site access, and no large addition or severe concealed damage.
Assumptions: U.S. house of about 1,500 sq ft, standard materials, licensed trades, and normal access; regional labor and repair needs vary.
How kitchens, wiring, and labor shape the renovation quote
Contractor estimates usually combine construction labor, materials, trade work, project supervision, and any disposal or permit charges. The allocation shifts with scope: a cosmetic refresh spends more on finishes, while a neglected house may devote a larger share to systems and framing.
| Quote component | Typical range | Pricing basis | What changes it |
|---|---|---|---|
| Kitchen materials and installation | $18,000-$75,000 | Per kitchen | Cabinet grade, counters, layout |
| Bathroom work | $8,000-$35,000 | Per bathroom | Tile, plumbing relocation, waterproofing |
| Electrical labor and materials | $8,000-$30,000 | Whole house | Panel capacity, wall access, rewiring extent |
| Plumbing replacement | $6,000-$20,000 | Whole house | Pipe material, number of fixtures, access |
| Roofing and exterior repairs | $8,000-$25,000 | Typical roof scope | Roof area, pitch, decking damage |
| Permits, disposal, and protection | $2,000-$10,000 | Project allowance | Local rules, debris volume, containment |
These ranges are planning allowances, not amounts to add automatically. A kitchen quote might already include electrical work, for example, while a whole-house electrical allowance may cover only the remaining rooms. Ask contractors to identify inclusions, exclusions, and allowances to prevent double counting.
Labor often accounts for 30%-50% of a renovation budget. Trade rates commonly fall around $50-$125 per hour, while specialized work such as historic plaster repair or licensed electrical work may cost more. translates quoted hours and rates into a labor estimate; confirm whether supervision and cleanup are included.
Separate labor, materials, permits, and allowances in the bid so competing quotes cover the same work.
Age, square footage, and old-house systems change the price
House age alone does not determine cost, but it can signal outdated systems or materials that require testing. Replacing an electrical panel and wiring may cost $8,000-$30,000; a 100-amp panel upgrade to 200 amps may add roughly $1,500-$4,000 when performed as part of a larger electrical job. Knob-and-tube wiring, inaccessible walls, or service-line work can push costs higher.
Plumbing replacement commonly runs $6,000-$20,000 for a typical house. Replacing galvanized supply lines may be more straightforward than rerouting drains beneath a slab. A single bathroom relocation can add several thousand dollars because new drain routes, venting, and opened floors or walls require extra labor.
Size affects both materials and work hours, but the price per square foot can fall on larger projects when kitchens and bathrooms are not multiplied in proportion to floor area. A 900-square-foot cottage still needs a kitchen, panel, and at least one bathroom, so its per-square-foot cost may be higher than a 2,000-square-foot home with similar condition and finish level.
Structural problems have wide price effects. Repairing a localized floor joist or section of subfloor may cost $1,000-$5,000; broader foundation stabilization can run $5,000-$30,000 or more. A roof with a pitch above 8:12, multiple dormers, or damaged decking usually costs more than a simple, accessible roof of the same area.
Hazardous-material handling also changes the bid. Asbestos or lead paint may require testing and regulated containment before demolition, and the work can add hundreds to several thousand dollars depending on area and condition. Do not assume ordinary demolition pricing covers testing, abatement, or disposal.
Confirm the electrical capacity, pipe material, roof condition, and structural framing before setting a firm renovation budget.
Regional labor rates shift old-house bids across the U.S.
Labor markets and local requirements can move renovation quotes substantially. High-cost coastal metro areas may run 20%-40% above national planning ranges, while smaller Midwest or Southern markets can land 10%-20% below them for comparable scope. Rural areas may have lower hourly rates but higher travel, delivery, or contractor mobilization charges.
These are broad comparisons, not guaranteed regional price lists. A historic district may require specialized windows, review fees, or preservation methods that offset lower local labor rates. In a high-demand city, permit delays and limited trade availability can also affect project overhead.
Climate and exposure matter, too. Cold regions may require insulation and air-sealing improvements; humid climates can reveal rot, drainage, or mold issues. Coastal locations may require wind-rated materials or corrosion-resistant hardware. A local contractor’s detailed site assessment is more useful than adjusting a national average by a single percentage.
Compare bids from contractors working in the same market and ask them to price identical specifications. A low quote from outside the area may omit travel, code requirements, or the trades needed for older construction.
How long do old-house crews need on site?
A cosmetic update may take 4-8 weeks, while a moderate whole-house renovation commonly takes 3-6 months. Extensive rewiring, plumbing replacement, structural work, or custom millwork can extend the schedule to 6-12 months. These estimates describe active project timelines, not the time needed for design, permitting, or material lead times.
A general contractor coordinates the schedule and subcontractors; a full renovation may involve carpenters, electricians, plumbers, roofers, painters, and flooring installers. The number of workers on site varies by phase, and multiple trades cannot always work simultaneously in a small or occupied house.
Delays can raise costs through extended supervision, temporary housing, storage, or repeated mobilization. A fixed-price contract may still include change orders for concealed damage or owner-requested changes. Establish how the contractor documents discoveries, obtains approval, and prices added work before demolition begins.
Keep a 10%-20% contingency for unknown conditions, especially when walls, floors, or ceilings will be opened. A house with recent inspections and accessible systems may need less; a neglected property with uncertain framing or moisture history may need more.
Three old-home renovation budgets with different scopes
A 1,000-square-foot bungalow needing surface updates but no major system work might receive a $45,000-$80,000 quote. An example budget could include $12,000 for paint and drywall repairs, $14,000 for flooring, $18,000 for a modest kitchen refresh, and $6,000 for lighting and finish carpentry. At roughly 450 labor hours and $65 per hour, labor alone would represent about $29,250 within those combined project prices, not an additional amount.
A 1,500-square-foot house with a midrange kitchen, two bathroom updates, partial rewiring, and new flooring may cost $125,000-$210,000. For example, a $165,000 quote could include a $38,000 kitchen, $30,000 for two bathrooms, $18,000 for electrical work, $20,000 for flooring and paint, and the balance for labor, permits, repairs, and supervision.
A 2,000-square-foot, 1920s house needing roof replacement, full electrical and plumbing work, and structural repairs could reach $250,000-$450,000. A roof of 2,200 square feet at $6-$12 per square foot might cost $13,200-$26,400; systems and structural work can then add well over $100,000, before high-end finishes or a major kitchen redesign.
These examples show why room count alone cannot predict the total: condition and system replacement often outweigh cosmetic choices. Compare each example only with a property of similar size, access, location, and repair scope.
When permits, removal, and hidden damage add charges
Permit and inspection charges vary by city, project value, and work type. A basic permit allowance may be $500-$3,000, while a multi-trade renovation or major structural project can exceed $5,000. Electrical, plumbing, and structural permits may be separate, and historic districts can impose additional review steps or documentation costs.
Demolition and disposal are not always included in room prices. Removing a kitchen or bathroom may add $1,000-$5,000 depending on debris, access, and whether materials require special handling. A dumpster commonly costs several hundred to more than $1,000 based on size, rental period, and local hauling fees.
Hidden water damage, insect damage, undersized framing, or unsafe wiring often appears after finishes are removed. The contractor should photograph the condition, describe the repair, and provide a written change order with added labor, materials, and schedule effects. A vague allowance such as “repairs as needed” makes it difficult to compare quotes or control spending.
Older homes may qualify for local preservation incentives or utility rebates for insulation, heating equipment, or efficient appliances, but eligibility and funding differ. Treat incentives as potential savings only after confirming the specific program, approved equipment, application timing, and required inspections.
Ask whether the quote includes permits, debris hauling, testing, and repair allowances before signing.
Which scope choices lower an old-house renovation bill?
Keep the existing kitchen and bathroom locations when possible. Moving a sink, toilet, or range can trigger drain, vent, electrical, and finish work; preserving the layout can save thousands compared with a full reconfiguration. Repairing sound cabinets and replacing doors or hardware may cost less than installing new cabinetry.
Prioritize safety and water protection before decorative upgrades. A leaking roof, failing wiring, or active plumbing problem can damage new finishes and create repeat costs. If the structure and systems are sound, staged cosmetic work can spread spending across several years, though repeated contractor mobilization may make separate small projects less efficient.
Choose standard-size windows, cabinets, and flooring where they fit the house. Custom millwork and specialty historic reproductions can be necessary for preservation, but they may cost substantially more than stock alternatives. Compare repair, reproduction, and replacement options while checking local historic rules before ordering.
Prepare rooms by clearing furniture and belongings if the contractor permits it, but leave hazardous demolition and trade work to qualified professionals. Request three written bids with the same finish allowances, scope, and contingency assumptions. Check that each bid names exclusions, payment milestones, warranty terms, and the process for approving changes.
The most controllable savings usually come from keeping the layout, limiting finish upgrades, and defining the work before demolition. Avoid reducing the budget by skipping required permits, code corrections, or qualified testing for suspected hazards.